<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
    <!-- action 向服务器发送请求的url -->
    <form action="http://localhost:8080/" method="get">
        <p>用户名：<input type="text" name="username"></p>
        <p>密码：<input type="password" name="pwd"></p>
        <p><input type="submit"></p>
    </form>
</body>
</html>